Lock



L. N. HAMPTON.

LOCK.

APPLICATION FILED SEPT-27,11920.

1,384,561 Patented July 12, 1921.

INVENToR v ATTORNEYS UNITED STATES PATENT OFFICE.

LEON N. HAMPTON, 0F NEW YORK, N. Y..

LOCK.

Specification of Letters Patent.

Patented July 12, 1921.

Application filed September 27, 1920. Serial No. 413,008.

their theft, although it is to be understoody that it is adapted for other purposes as well. An object of my invention is to provide a lock of the character designated wherein a tire, or tires, may be securely'held in place on their supports in suoli. a manner as to prevent rattling and theft of the tires, and wherein the shackle employed with my imroved. lock is of such a character as to readily adapt the lock to tires of various sizes. l

A further object of my inventionvis to provide a lock wherein the shackle Yemployed may be gripped at any point desired throughout its length to prevent its movement to inoperative position.

A further objectl of my invention is the provision of a lock wherein withdrawal of the flexible shackle employed by a person not equipped with a key is prevented.

A further object of my inventionV is the provision of a lock,'the shackle of which while flexible, is tempered to a degree which will effectually prevent cutting of the same.

A further object of my invention is the provision of a lock wherein the shackle is referably though not necessarily passed into the lock through a tortuous passageway so designed as to prevent the insertionv of a tool to the interior of the lock by aperson attempting to remove the shackle without the use of a key. E

' .A further object of my invention is to Y provide a lock of the character designated which will be well adapted for the purposes for which itis designed, simple in construction and practically theft-proof.

In the accompanying drawings wherein have illustrated an embodiment of my invention- Figure 1 is a view of my improved look withthe capl orf face plate with which the lock is provided, removed;

Fig. 2 is a viewv taken on `the line A-A of Fig. 1 looking in the direction of the ar-l rows; l'

Vthey passageway 8 except by a Fig. 3 is anelevational view of my Vimproved device showing the free end of the shackle inserted therein; and

Fig. 4 is a sectional view of a portion of hek shackle employed withv my 'improved Referring to the drawings in detail, 1 designates a casting, provided with a hub 2 bored to receive a lock-barrel 3 which may be of any of the well-known' types of lockbarrels, the barrel 3 having a press fit in the casting 1. The outer periphery of the hub 2 is finished off and is adapted to receive an eccentric cam 4 rotatable about the hub and adapted to engage a shackle 5 to hold the same in placel when the lock is in use.

The casting 'l is provided at one end with a hole or passageway 6 into which is inserted the end of the shackle 5, this end of the shackle being permanently secured in place by a rivet 7. The other end of the casting is provided with a tortuous passageway 8 through which the free end of the shackle 5 is passed when the lock is in use and where the shackle is gripped by theV cam 4.

.The eccentric cam 4 as heretofore mentioned is adapted to engage the shackle 5 and prevent withdrawal of the same from person equipped with a key for the lock. ln this connection it will be seen from Fig. 1, for example, that as the shackle passes through the passageway 8 and engages the periphery of the cam 4 the latter will be rotated in an anticlockwise direction as viewed in Fig. 1 against the action of a spring 9 which is attached to the casting 1 and to the eccentric cam 4 and is provided for the purpose of always urging the cam to operative or shackle-engaging position. The spring 9 as yjust mentioned, will always maintain the cam 4 in line with the opening or passageway 8 and in engagement with the shackle and attempted withdrawal of the shackle from thelock will merely cause the cam 4 to rotate in a clockwise direction as viewed in Fig. 1 to more firmly grip the shackle and thereby effectually prevent its withdrawal.

The end of the lock-barrel 3 is equipped with a cam or rotatable member 10 adapted to engage a lug 11 provided on the cam 4 so that when it 1s desired to unlock or release the shackle 5 the key 1l may be inserted in the barrel 3 and turned to rotate the member into engagement with the lugs 11 on the cam 4 to rotate the latter in an anticlockwise direction and out of locking engagement with the shackle 5. The rotatable member 10 is held in place'in the end of the lockbarrel by small screws 12.

' It will be seen from Fig. land also from Fig, 2 that the rotatable member or cam 10 is provided kwith two extensions 13 and 14, each of which is adapted to engage the lugs 11 on the cam 4 and both of which slightly overlie the cam to prevent sidewise motion of the same as the latter is rotated. In this connection therefore the member 10 may be considered as a Vguiding member for the cam 4. Y

In order thatthe movement of the cam 4^maybe limited in both directions I have provided a screw or pin 15 which' passes into the casting 1 and lock-barrel 3, the head of the screw projecting suHciently to be en- -gaged by one of the lugs 11.011 the eccentric -construction, I form of shackle,

ytime be flexible. 'shackle here employed comprises. a body cam 4 or the lug 13-of the member 10 as the .a ease may be, when the camV 4 has been moved a predetermined distance. This screw or pin it'will be observed, also holds the lock-barrel in fixed position in the casting 1 and prevents its rotation.

. The inner end of the lock-barrel 3, the cam 4 and rotatable member 10, in fact all of the operating parts of the lock, are inclosed by a cap 1,6 which has a press liti'n the casting .1., The tortuous passageway 8 already referred to is provided for the purpose of preventing the insertion of a tool of some kind into the lock so as to turn the eccentric cam 4. lIt will be noticed from Fig. 1, for example, that `the bottom of the inlet side of said passageway S' is in line with the axis of rotation of the cam 4 so that should a tool of some kind be inserted into the passageway 8 beneath the shackle `5, pressure on the tool would not cause the cam 4 to rotate.

While the shackle 5 may be of any desired which has been herein illustrated, particularly in Fig; 4. As already noted the shackle should be sufliciently hard to prevent cutting of thel same in an attempt tovdestroy the lock, but should at the saine Tovthis end, therefore, the

`member, 17 comprising a spring-tempered spi- `rally-wound member.

On th'e exterior of this member 17 is another spirally-wound n member18 which'when in place will give to the shackle a substantially smooth exterior. This outer member 18 may also be springtempered if desired.

5 .In `order vthat elongation of they shackle maybe to withdraw the shackle from the lock Withprevented should an attempt be made out-theuse of a key, I have provided within shackle a member preferably ofpano the shackle.

prefer to employ a special wire 19, the length of this member being equal to` the normal length of the shackle itself and the ends of which are fastened to the ends of the shackle in any suitable manner. It will be obvious, therefore, that should an attempt be made to elongate the shackle, this will be effectually'prevented byV of course unnecessary. If, now, an attempt* be made to withdraw theshackle the friction of thesame on the will Vcause the latter to rotate inthe opposite direction to more firmly grip the shackle, this grip increasing with the increase in pull on By the use of a tool of some kind inserted into the passageway 8 it will be seen that the tool will bear on the cam 4 at a point which is directly in line with the axis of rotation of this cam fort exerted upon the tool would not tend to rotate the cam and the latter, therefore, would remain-in its grippingposition with respect to the shackle.

necessary to insert the key 11 in the lock and rotate the member 10 into engagement with the lug 11 on the eccentric cam 4 carrying the cam out of shackle-releasing when the shackle can be easily withdrawn.

Itwill be observed from the foregoing that the lock here shown and described emso that any ef In order to release Vthe shackle it will be seen that it is merely position bodies few parts which are easy to assemble v andwhich are so eonstructed'and arranged as tov prevent tampering with the person not equipped with a key,

It will be observed also `that the lock is adapted to grip or lock the shackle 5 at any position desired throughout the .length of the shackle,thereby use with tires or other articles o f various sizes. This feature possesses a. `further advantage -Ilfht the tire orv other article may grip desired. The

been referred" to .be held with any degree of lock-barrel 3 which. has herein may be of any of the well-known types of lock-barrels on the market and for this reason I have not deemed it necessary to illustrate the same in detail. Y

lock by a adapting thelocktfor n While I have here illustrated and described a specific embodiment of my invention vit is to be understood that various ehangesjmay be made in the details of construetion'within the purview ofmy invention. Whatis claimed is: k "f ,1, In a lock, a casing, a cam mounted .withi said cam, for actuating said cam when moved in the opposite directionout of line with said opening.

Q. In a lock, a casing, a Y cam mounted within and inclosed by said casing, said casing being provided with an opening for the passage of a shackle between the cam and casing, means for automatically moving said cam into line with said opening, a lock barrel received by said casing, and rotatable means, secured to said lock barrel and rotatable in one direction independently of said cam, for actuating said cam out of line with said opening when rotated in the opposite direction.

3. In a lock, a casing, a'cam ithin and inclosed by said casing, the casing being provided with an opening for the passage of a shackle between the cam and casing, a lock carried by said casing, a key for said lock, means operable independently of said lock and key for moving said cam relatively to said lock and key to bring the cam into line with said opening, and means operable by manipulation of said key for moving said cam in the opposite direction.

4L. In a lock, a casing, a cam mounted within and ,inclosed by said casing', a shackle, said casing being provided with an opening for the shackle between the cam and casing, means for automatically moving said cam mounted into engagement with theshackle to causeV the cam to grip the shackle and prevent its removal from the opening in'said casing, a lock barrel received by said casing and means secured to said lock barrel for preventing lateral movement of said cam. I

5. In a lock, a casing, a rotatable cam within and inclosed by said casing, a shackle, said casing being provided withan opening for the shackle between the cam and casing, means for automatically inovingsaid cam into engagement with said shackle to prevent removal of the shackle from the opening in said casing, a lock barrel received by said casing and means operatively connected to said lock barrel for preventing lateral movement of said cam and for moving said cam to inoperative position to release the shackle.

6. In a lock, a casing, a cam mounted within and inclosed by said casing, a shackle, said easing being providedwith an opening for the shackle between the cam and casing,

means for automatically moving said cam into engagementwith the shackle to cause the cam to grip the shackle, a lock barrel, means for securing the barrel to the casing and means operatively connected to the lock barrel for moving the cam to inoperative position to release the shackle, the means for securing the lock barrel to the casing preventing abnormal movement of the cam.

7. In a lock, a casing, a hub formed therein, a lock barrel received by said hub, a cam within said-casing and rotatable about said hub, saidk casing being provided with a passageway for the shackle between itV and saidl cam, a spring for automatically rotating said cam into position to cause the same to grip a shackle, a rotatable member secured to said lock barrel and provided with lugs for engaging said cam to rotate the same against the action of said spring, means for securing the lock barrel to said hub and for preventing abnormal movement of said cam, and a cap rigidly secured to said casing.

8. In a lock, a casing, an eccentric cam rotatably mounted within and inclosed by said casing, a shackle, said casing being provided with an openingv for the shackle between the cam and casing, means for automatically moving said cam into engagement with said shackle to cause the cam to grip the shackle and prevent its removal from the opening in said casing, a lock-barrel received v by said casing, and rotatable means operatively connected to said lock-barrel for moving said cam to inoperative position to release the shackle.

9. In a lock, a casing, a rotatable eccentric camy within said casing and a tortuous passageway leading from the exterior of the casing to a point between the said casing and said cam, the bottom of the inlet side or' said passageway being substantially in alinement with Vthe axis of rotation of said cam.

This specification signed this 24th day of September, 1920.

L. N. HAMPTON. 

